Go Back   Team-BHP > Under the Hood > Technical Stuff


Reply
 
Thread Tools Search this Thread
Old 5th December 2017, 19:43   #76
Senior - BHPian
 
rocksterraghu's Avatar
 
Join Date: Feb 2007
Location: Bangalore
Posts: 1,230
Thanked: 155 Times
Default Re: Fuel tank capacity measurement, how?

I don't mean to suggest that petrol pumps do cheat, but if there was a way for them to do it, they would have enough tweaks in the mechanism to make sure there is a lot of gimmick before it cuts off (I also understand they are supposed to have ways of measuring actual fuel and prove it to a customer who questions the quantity, so it's not easy). Having said that, top-up as it is called popularly, is a crime; because you pay for fuel you're not sure is being filled in or not. Always remember that you measure the amount of fuel only by the counter in the fuel station dispenser. You never know when you're wrong.

I guess the best way to ascertain FE is to just go reserve to reserve instead of almost-empty to almost-empty with a mix of top-up confusions.

And my sincere suggestion would be to stay away from top-up offers, unless you desperately need a longer range and you're not sure of a good fuel station nearby.
rocksterraghu is offline   Reply With Quote
Old 6th December 2017, 09:19   #77
BHPian
 
Join Date: Dec 2015
Location: India
Posts: 260
Thanked: 691 Times
Default Re: Fuel tank capacity measurement, how?

Quote:
Originally Posted by arvind71181 View Post
You generally can squeeze in more fuel if you try to fill it up to the brim, anywhere between 3-5 liters would be my guess. Did you stop at the auto cut off? If not, then there is a high probability of more fuel being filled.
Thanks for the Info Arvind. No I did not stop at auto cutoff. Maybe I should have because there was this foul smell of petrol inside car for the next 20-25 Km's for the first time since I bought the car. I guess we should not fill it till the brim.
RaghuVis is offline   (1) Thanks Reply With Quote
Old 6th December 2017, 09:30   #78
BHPian
 
arvind71181's Avatar
 
Join Date: May 2010
Location: TN-14
Posts: 910
Thanked: 1,061 Times
Default Re: Fuel tank capacity measurement, how?

Quote:
Originally Posted by RaghuVis View Post
Thanks for the Info Arvind. No I did not stop at auto cutoff. Maybe I should have because there was this foul smell of petrol inside car for the next 20-25 Km's for the first time since I bought the car. I guess we should not fill it till the brim.
Yes auto cut off would work well enough, unless you are desperate for a higher range. Auto cut off also works well to calculate the mileage as you have a set amount of liters that will go in each time, so calculation becomes more accurate. I always do an auto cut off only.
arvind71181 is offline   (1) Thanks Reply With Quote
Old 18th January 2018, 17:21   #79
BHPian
 
Turbopetrol's Avatar
 
Join Date: Nov 2017
Location: BLR
Posts: 122
Thanked: 97 Times
Default Re: Fuel tank capacity measurement, how?

Hi all,

VW Polo fuel tank capacity is 45L. So if fuel is filled till auto cutoff, would there be at least 45L of fuel in the tank + fuel lines combined?

The maximum amount of fuel I have filled with auto cutoff till now is 41.74L.
Turbopetrol is offline   Reply With Quote
Old 26th June 2018, 15:17   #80
Newbie
 
Join Date: Jun 2018
Location: Thane
Posts: 1
Thanked: 0 Times
Exclamation Re: Fuel tank capacity measurement, how?

i tanked up my chevy spark (2009) yesterday & it swallowed 40 litres of petrol, i filled it up to tanks neck as i had to go on a long tour & before filling it up it was having some fuel in it.

The pump is a Reliance pump at Shil phata-Taloja road, navi mumbai. Usually i trust reliiance & shell's pumps for filling up but this time i dont have any clue; here whats right & whats not, i dont know.

does my spark's tank have a capacity of 43-45 litres? or the perol pump guy cheated me? help
rohanhsaraf is offline   Reply With Quote
Old 17th October 2018, 11:50   #81
BHPian
 
Join Date: Jun 2016
Location: Bombay/Belgaum
Posts: 292
Thanked: 528 Times
Default Re: Fuel tank capacity measurement, how?

Hello team, help me understand this. Fuel tank capacity of my VW Polo petrol is 45 litres. Manual says - 45 litres of which 7 litres is reserve. So does that mean, when I do a full tank, only 38 litres get displayed on the MID between 0 and 1 ? In other words, the amount of fuel in reserve tank is never displayed on the instrument cluster ? I am attaching screenshots for easy understanding.

Fuel tank capacity measurement, how?-img_20181017_113830__01__01.jpg






Fuel gauge in the MID ( between 0 and 1 )
Fuel tank capacity measurement, how?-screenshot_20181017112457.jpg





I ask this question because I drove a good 20 kms even after the MID showed expected range of distance that can be driven as "0" kms and also displayed absolutely no fuel. I think I could have driven some more distance but filled the tank up. I took the risk purposely to figure out this. May be it was the reserve fuel that was driving the vehicle, but on MID there was absolutely zero fuel, not even a single stick in that meter.

Last edited by vivek95 : 17th October 2018 at 11:52.
vivek95 is online now   Reply With Quote
Old 17th October 2018, 12:16   #82
Distinguished - BHPian
 
Join Date: Oct 2012
Location: Delhi
Posts: 3,692
Thanked: 10,085 Times
Default Re: Fuel tank capacity measurement, how?

Quote:
Originally Posted by vivek95 View Post
Hello team, help me understand this. Fuel tank capacity of my VW Polo petrol is 45 litres. Manual says - 45 litres of which 7 litres is reserve. So does that mean, when I do a full tank, only 38 litres get displayed on the MID between 0 and 1 ? In other words, the amount of fuel in reserve tank is never displayed on the instrument cluster ? I am attaching screenshots for easy understanding.

.
I donít think so. I think it works as follows on most cars.
The MID will always show a conservative number, be it liters left or range to go. It is not necessarily the same as the reserve. On most cars I have driven you will get the reserve indication before the tank register empty or the range becomes zero. With the range zero, fuel gauge needle on the zero peg, you will find you can still drive many miles.

It is just the manufacturer being on the safe side of cautious. They donít want any hassle, let alone court cases, on you running out of fuel. Which can get you into problems even dangerous situations. Also, it isnít particularly good for your engine, be it petrol or diesel. In some case, especially older diesel, running the tank empty, requires manual priming of the fuel system once the tanks has been filled up.

In essence, similar to your speedo. That is also set to show a higher speed than actual speed.

Top Gear did a challenge some years ago. Driving three cars from Basel to Blackpool. Jeremy was driving a Jaguar with the MID showing 0 range for many, many miles!



Jeroen
Jeroen is offline   (3) Thanks Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Just a thought - Units of measurement jat Technical Stuff 40 14th October 2013 18:11
FE Measurement - Clinical method and Practical Method vivaid Technical Stuff 52 3rd March 2013 17:40
Can the fuel tank capacity be increased speedsatya Modifications & Accessories 4 11th November 2009 09:31
Reserve Tank capacity on Swift VXi ?? chetanthaker Technical Stuff 13 22nd October 2007 16:34
fuel tank 42lt.- fuel in-44lt. v.tec Technical Stuff 55 29th August 2006 20:50


All times are GMT +5.5. The time now is 14:31.

Copyright ©2000 - 2018, Team-BHP.com
Proudly powered by E2E Networks